Coupling for window-cleaners&#39; devices



W. W; SLEIGHT.

COUPLING FOR WINDOW CLEANERS DEVICES. APPLICATION FIL ED SEPT, 16. I918- 1 330,401 Patented Feb. 10, 1 920.

WILLIAM w.

snnrenr, crrrcaeo, ILLINOIS.

COUPLING F t 'WINIDO'W-CLEANERS DEVICES.

Specification of Letters Patent.

Patented Feb. 10, 19 2c.

Application filed September 16, 1918. Serial No. 254,202

To all whom it may concern 1 Be it known that T, Vinmrur W. Stmcirr, a citizen of the United tates, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful lmprovements in Couplings for l Vindow- Cleaners Devices, of which the following is a full, clear, and exact description.

My invention relates to the metal coupling fixtures by which the harness of window cleaners are removably secured to the window-frames.

I-leretofore accidents have happened to window washers that resulted from insecurely fastening the terminal fixturesof the supporting rope that were attached to the permanent bolts projecting from the window frames, This was due in large measure, to the twisting strain exerted by such terminal fixture upon and the breaking 05 of the head of the bolt, or, where two bolts are used, as is the case with many of the modern window washing contrivances, by the failure of the careless window washer to see that the terminal fixture engaged both bolts, and the prying outward and twisting of the peculiar terminal fixture employed to engage the two bolts. The prying twisting pressure so exerted by the last mentioned terminal fixture is, under the conditions stated, aggravated by placing the eye of the fixture to which the rope is attached at the lower end of the same.

The object of my invention is to make it impossible to attach the terminal fixture to the bolt in any other than the correct way, and to prevent the possibility of the fixture twisting or prying outward against the head of the bolt, as distinguished from a straight outward pull upon the same, and it is a further object of my invention to make the bolt head stronger and the terminal fixture more compact without the employment of more metal, and to reduce the cost and simplify the construction of said fixture.

In the following description and accompanying drawings like reference characters indicate similar parts.

In the drawings:

Figure 1 is a side elevation of my invention. 7

Fig. 2 is a horizontal section taken on dotted line 22, Fig. 1.

Fig. 3 is a vertical section taken on dotted line 3-3, Fig. 2.

Referring to the drawings, A represents of the latter.

the wall of a building and the side'of a window-frame therein. My improvements comprise, among other features, an anchor" which consists of a head 4 and a fiat bolt 5 extending obliquely therefrom and to the direction of the strain exerted by the harness of the window cleaner thereon. The inner end of this bolt terminates in a knob 6 of suitable shape, and the side edges of the same are provided with notches or serrations 7, 7. When this bolt is inserted through the side of the window-frame into the wall and the cement used in connection therewith has set, the knob and these notches absolutely prevent the withdrawal of the anchor.

Head at of the anchor is, preferably, elongated vertically and has a vertically elongated tenon 8 projecting outward therefrom which is T-shaped in cross-section. This tenon is adapted to enter a rectangular hollow socket 9 of the terminal fixture from the upper portion of one side of which an apertured lug or eye 17 projects to which the rope C of the window cleaners harness (not shown) is permanently attached. The shell of this socket is open at its lower end, and it has a vertical slot 10 in its side opposite that from which lug 17 projects, which extends from said lower open end to near the upper closed end of said shell. This slot is slightly greater in width than the narrower or neck portion of the tenon 8 of the bolt, and the tenon is adapted to enter the lower end of the socket when the latter is moved downward over the same, and the neck of the tenon to enter and move upward into the slot until it engages the upper end The lower end of the front wall of the socket from which the lug 17 projects terminates above the lower end of the rear wall in which slot 10 is made, and the lower ends of the walls connecting said front and rear walls extend downward beyond the same to form the legs of a loop or yoke 11 that curves forward to provide suflicient clearance for the insertion of the tenon into the lower end of the socket, in

I rearward and owing to its weight normally bears against the inner surface of the rear wall of the socket and closes the lower end of the same.

What I claim as new is In a device of the class specified the combination with a vertically elongated socket having an apertured lug projecting from one wall thereof near its top and having a vertical slot in its opposite wall that is closed at its upper end and open at its lower end, and a pivoted gravity actuated trip guarding the lower end of said slot, of a device permanently attached to a window frame having a vertically elongated head 15 or tenon that is adapted to enter the lower end of said slot, lift and pass said trip, be locked in and prevent said socket from twisting thereon, and to maintain the pulling strain on said apertured lug approximately 20 horizontally outward from said head.

In witness whereof I have hereunto set my hand this 7th day of September, 1918.

WILLIAM W. SLEIGHT.

Witnesses FRANK D. THOMASON, FLORENCE MITCHELL. 

